Regulations & Permits
Use this portal to filter and search for all of our regulatory information.
We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.
2020 State Agency Greenhouse Gas Calculator
Calculator for state agencies to determine their greenhouse gas emissions
https://ecology.wa.gov/2020-state-agency-greenhouse-gas-calculator
Washington 2018 Greenhouse Gas Contributors by Percent
Pie chart showing 2018 Washington greenhouse gas contributors by percent
https://ecology.wa.gov/20201228-ghgpiechart-2018-alt
2023-GHGreport-Instructions
Instructions for completing your 2023 GHG report
https://ecology.wa.gov/2023-state-agency-ghg-report-instructions
Tracking Washington Greenhouse Gases
Chart showing past emissions and future greenhouse gas limits set by the Legislature.
https://ecology.wa.gov/20201221-ghg-actual-projections_alt
State Agency Greenhouse Gas Emissions Calculator
State agencies use this calculator to determine and report their greenhouse gas emissions.
https://ecology.wa.gov/stateagencyghgcalculator
2017 Greenhouse gas emissions by sector
Alt text for greenhouse gas emission by sector graphic
https://ecology.wa.gov/20200407-2017ghgemissionsbysector-alt
2001 - 2017 GHG and GDP percentage changes
graph showing population, economy, greenhouse gas emissions from 2001 - 2017
https://ecology.wa.gov/20191118ghggdp-alt
HFC User Guide, long version
This is the longer instructions about how to submit your completed HFC notification form using our online reporting system.
https://ecology.wa.gov/hfc-user-guide-long-20190901
HFC User Guide, short version
This is the short (one-page) instructions about how to submit your completed HFC notification form using our online reporting system.
https://ecology.wa.gov/hfc-user-guide-short-20190901
Washington's greenhouse gas emissions targets
A chart showing greenhouse gas emission reduction targets compared to a 1990 baseline.
https://ecology.wa.gov/20190729emissions-alt
2018 State Agency Greenhouse Gas Calculator
An Excel file to help you determine you emissions.
https://ecology.wa.gov/2018stateagencycalculator
Washington Total Annual Emissions
bar chart shoring Washington greenhouse gases the past decade
https://ecology.wa.gov/2011-2018_ghg-barchart-alt
Washington State Agencies Required to Report their Greenhouse Gas Emissions to Ecology
Some Washington state agencies are required to report their greenhouse gas emissions to Ecology. This is a list of those that are required.
https://ecology.wa.gov/stateagenciesrequiredtoreportghg
Washington State Agency Greenhouse Gas Reporting and Calculator Instructions
Instructions to help state agencies fill out the greenhouse gas calculator.
https://ecology.wa.gov/stateagencyghgcalculatorinstructions
Air Quality Application Portal Training Guide
Instructions about how to access the Air Quality Portal within Secure Access Washington. You must access this portal for reporting. Version 1.1
https://ecology.wa.gov/aqportaluserguide
Clean Air Rule Tracking System User Training Guide
Instructions for entering information into the Clean Air Rule Tracking system
https://ecology.wa.gov/cartsuserguide
Approved verifiers and verification bodies for greenhouse gas reporting
A list of approved third party verifiers and verification bodies in Washington's Greenhouse Gas Reporting Program.
https://ecology.wa.gov/2017ghgverifierlist
2012-2016 Washington's Mandatory Greenhouse Gas Reported Emissions
This report shows greenhouse gas emissions reported to us under the state mandatory reporting program.
https://ecology.wa.gov/2012-2016wagreenhousegasreportedemissions-f2a2b89e80ce6dd5c1530dae57fbe534
Clean Air Rule: Potentially Eligible Parties
Organizations that emit 70,000 metric tons of carbon pollution or more are regulated by the Clean Air Rule. This is a list of organizations that potentially meet this criteria.
https://ecology.wa.gov/potentialbussinessescoveredbycar
November 30, 2021 list of HFC manufacturers
This is the November 30, 2021 list of manufacturers that reported the status of their use of restricted hydrofluorocarbons (HFCs).
https://ecology.wa.gov/2021hfcmanufacturers
663 results
301 - 320 of 663